Patent RU-2744090-C1 (RU)
Inventor: TITOV EVGENIJ VLADIMIROVICH
IPC: G01R29/08
Filed: 2020-06-25
Granted: 2021-03-02
Abstract: FIELD: measuring technology.SUBSTANCE: invention relates to devices for measuring the characteristics of an electromagnetic field, In particular, to measure the electromagnetic field parameters in a wide frequency range from 30 MHz to 30 GHz and to assess the hazard of each of the monitored electromagnetic field components in that range. The technical result is achieved in that the device for monitoring electromagnetic radiation in the triple frequency range comprises a body, an antenna, a detector, a balance modulator, an amplifier, a filter, a direct current supply source connected to a quartz generator, in contrast to the prototype, it is provided with a high-frequency antenna connector for transmitting a controlled electromagnetic signal from the output of the antenna, in the form of which a flat printed self-complementary antenna is used, at the first input of the introduced electromechanical switching unit, connected by the second input to the first output of the input microcontroller via the bus of the UART interface and connected by the first output via an input attenuator to the first input of the balance modulator or connected by the second output to the first input of the amplifier, the output of which is connected to the first input of the balance modulator, the second input of which is connected to the output of the quartz generator, which is connected by the first input via an introduced smoothing filter to the output of the introduced digital analogue converter, built into the microcontroller together with the introduced analog-digital converter, which is connected by the first input to the output of the detector, in the form of which a log-frequency detector is used, the first input of which is connected via a filter, in the form of which an active three-band filter is used, with the output of the balance modulator and a second input connected to the output of the introduced reference voltage source, is also provided with a liquid crystal TFT display connected by the first input through the bus of the serial peripheral interface of the SPI with the second output of the microcontroller, the third output of which is via the COM port integrated into the microcontroller, is connected by a connector via the UART interface bus to a portable personal computer, and the outputs of the DC power supply are connected to the second input of the amplifier, the second input of the quartz generator, the second input of the logarithmic detector, the input of the support voltage source, the input of the microcontroller and the second input of the liquid crystal TFT display, wherein the body, which is made of a dense shielding material, is provided with the elements of the device, in addition to the flat printed self-complementary antenna, high-frequency antenna connector and liquid crystal TFT display.EFFECT: technical result of the invention is possibility of investigating an electromagnetic field in a wide frequency range: 30 MHz-30 GHz, increasing accuracy and sensitivity of measurements, selective monitoring of electromagnetic radiation in separate frequency bands, output of measurements to a portable personal computer.1 cl, 1 dwg